Method for preparing tetramethylammonium hydroxide by continuous flow bioelectrochemistry system

A tetramethylammonium hydroxide, bioelectrochemical technology, applied in the field of bioelectrochemistry, can solve the problems of complicated preparation steps, difficult to meet the preparation quality of the TMAH preparation process, and achieve the effect of realizing energy consumption

Inactive Publication Date: 2015-05-06
SUN YAT SEN UNIV
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Problems solved by technology

The production methods of tetramethylammonium hydroxide mainly include chemical synthesis and electrochemical synthesis. In the two preparation methods, although the chemical method can prepare TMAH, the preparation steps are cumbersome, including liquid preparation, reaction, filtration and refining, etc. Therefore, no matter the preparation process or the preparation quality of TMAH prepared by this method is difficult to meet the requirements of the modern market.

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  • Method for preparing tetramethylammonium hydroxide by continuous flow bioelectrochemistry system
  • Method for preparing tetramethylammonium hydroxide by continuous flow bioelectrochemistry system

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Embodiment Construction

[0012] specific implementation plan

[0013] Such as figure 1 As shown, the novel bioelectrochemical system applied to the production of tetramethylammonium hydroxide - microbial desalination synchronous acid-base pool is composed of four compartments, the four compartments are composed of bipolar membranes, cation exchange membranes and anion exchange membranes, Arranged in different order, four compartments are composed of anode chamber, acid chamber, middle chamber and alkali chamber.

[0014] The anode of the anode chamber in this reaction system is a carbon brush, which is placed in the matrix solution of the anode chamber. At the beginning, the electrogenic microorganisms are cultivated by inoculation, and then the electrogenic microorganisms will form a biofilm on the carbon brush anode.

[0015] The cathode is prepared by three-layer rolling, with a catalytic layer and a diffusion layer on both sides, which are respectively rolled and placed on both sides of the stain...

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Abstract

The invention belongs to the technical field of bioelectrochemistry system and aims to provide a method for preparing tetramethylammonium hydroxide by a continuous flow bioelectrochemistry system. The continuous flow bioelectrochemistry system used in the method is formed by a microorganism desalting and synchronous acid/base producing pool with four chambers; the four chambers include an anode chamber, an acidic chamber, a neutral chamber and a basic chamber which are formed by bipolar membranes, cation exchange membranes and anion exchange membranes which are arranged in different orders; with tetramethyl ammonium chloride aqueous solution as raw material, tetramethylammonium hydroxide is prepared in a continuous running manner, wherein chemical energy is converted into electric energy by electricigens during the process; therefore, the method has the characteristics of low preparation cost, small energy consumption and convenient operation, and furthermore, both the economic and environmental benefits are considered.

Description

technical field [0001] The invention relates to a method for preparing tetramethylammonium hydroxide, which belongs to the field of bioelectrochemistry, in particular to a method for preparing tetramethylammonium hydroxide by utilizing a continuous flow bioelectrochemical system. Background technique [0002] Tetramethylammonium hydroxide (TMAH), as a soluble organic strong base in the chemical industry, is widely used as a catalyst, and is also commonly used as a photoresist, etchant and surface for printed circuit boards and microchips in the electronics industry Modifier with high application value. With the development and progress of society, higher requirements are put forward for the purity and preparation method of TMAH. The production method of tetramethylammonium hydroxide mainly contains chemical synthesis method and electrochemical synthesis method. In the two preparation methods, although the chemical method can prepare TMAH, the preparation steps are loaded do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/00C25B9/10C25B9/23
Inventor 刘广立程兴骆海萍张仁铎
Owner SUN YAT SEN UNIV
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